| Inferior anal nerves | |
|---|---|
 The superficial branches of the internal pudendal artery. (Inferior anal nerves visible but not labeled.) | |
 Pudendal nerve, its course through the lesser sciatic foramen, and branches, including inferior anal at bottom right. | |
| Details | |
| From | Pudendal nerve (usually) sacral plexus (occasionally) |
| Innervates | Sphincter ani externus and sensory around the anus |
| Identifiers | |
| Latin | nervi anales inferiores, nervi rectales inferiores, nervus haemorrhoidalis inferior |
| TA98 | A14.2.07.038 |
| TA2 | 6555 |
| FMA | 75469 |
| Anatomical terms of neuroanatomy | |
Theinferior rectal nerves (inferior anal nerves,inferior hemorrhoidal nerve) usually branch from thepudendal nerve but occasionally arises directly from thesacral plexus; they cross theischiorectal fossa along with theinferior rectal artery andveins, toward theanal canal and the lower end of therectum, and is distributed to thesphincter ani externus (external anal sphincter, EAS) and to the integument (skin) around the anus.
Branches of this nerve communicate with theperineal branch of theposterior femoral cutaneous and with theposterior scrotal nerves at the forepart of theperineum.
Cutaneous innervation below thepectinate line andexternal anal sphincter.
This article incorporates text in thepublic domain frompage 968 of the 20th edition ofGray's Anatomy(1918)
